As of Sept. 12, Texas had regional illness — a step below the widespread activity reported in 21 states. CDC tests show that 99% of that week’s confirmed flu cases in the U.S. were Influenza A and half of those were the H1N1 strain.

All of last week’s positive samples in Texas were Influenza A. The few that were subtyped turned out to be H1N1.

If early reports prove correct, Texas will move into the highest flu activity category for the week ending Sept. 19.

On Sunday, the Texas Department of State Health Services began collecting data on confirmed H1N1 hospitalizations, intensive care admissions and deaths.